:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary: #4b5563;
    --light: #f3f4f6;
    --dark: #1f2937;
    --success: #10b981;
    --white: #ffffff;
    --card-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

[data-lang="es"] .lang-en {
    display: none;
}

[data-lang="en"] .lang-es {
    display: none;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--dark);
    line-height: 1.6;
    background-color: var(--white);
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header & Navigation */
header {
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary);
}

.nav-links {
    display: flex;
    list-style: none;
}

.nav-links li {
    margin-left: 30px;
}

.nav-links a {
    text-decoration: none;
    color: var(--secondary);
    font-weight: 500;
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--primary);
}

.language-switcher {
    display: flex;
    align-items: center;
    margin-left: 30px;
}

.language-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--secondary);
    padding: 5px 10px;
    border-radius: 4px;
    transition: var(--transition);
}

.language-btn.active {
    background-color: var(--primary);
    color: var(--white);
}

.hamburger {
    display: none;
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--dark);
}

/* Sections */
section {
    padding: 100px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
    font-size: 2.5rem;
    color: var(--dark);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background-color: var(--primary);
    border-radius: 2px;
}

/* Presentation Section */
#presentation {
    padding-top: 150px;
    background: linear-gradient(135deg, #f0f4ff 0%, #e6f0ff 100%);
    text-align: center;
}

.profile-img {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 30px;
    border: 5px solid var(--white);
    box-shadow: var(--card-shadow);
}

.logo-img {
    width: 300px;
}

.presentation-content h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    color: var(--dark);
}

.presentation-content p {
    font-size: 1.2rem;
    max-width: 800px;
    margin: 0 auto 30px;
    color: var(--secondary);
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    background-color: var(--primary);
    color: var(--white);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 500;
    transition: var(--transition);
    border: 2px solid var(--primary);
}

.btn:hover {
    background-color: transparent;
    color: var(--primary);
}

/* Products Section */
#products {
    background-color: var(--white);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.product-card {
    background-color: var(--white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.product-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.product-content {
    padding: 20px;
}

.product-content h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: var(--dark);
}

.product-content p {
    color: var(--secondary);
    margin-bottom: 20px;
}

/* Contact Section */
#contact {
    background-color: var(--light);
}

.contact-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 50px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background-color: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.2rem;
}

.contact-text h4 {
    font-size: 1.2rem;
    margin-bottom: 5px;
}

.contact-text p {
    color: var(--secondary);
}

.contact-form {
    background-color: var(--white);
    padding: 30px;
    border-radius: 10px;
    box-shadow: var(--card-shadow);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

/* Footer */
footer {
    background-color: var(--dark);
    color: var(--white);
    padding: 30px 0;
    text-align: center;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 20px;
}

.social-links a {
    color: var(--white);
    font-size: 1.5rem;
    transition: var(--transition);
}

.social-links a:hover {
    color: var(--primary);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: block;
    }

    .nav-links {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background-color: var(--white);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        transition: var(--transition);
        gap: 30px;
    }

    .nav-links.active {
        left: 0;
    }

    .presentation-content h1 {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 2rem;
    }
}